In addition to full color areas, it is also possible to print halftone screens on the risograph. If multi colored images are to be reproduced, similar to offset or digital printing, this can be done in different ways. These overlapping color planes are usually called separations, positives or plates, depending on the printing process, substrate or context. For example, it is possible to create three-color printing with three colors in the risograph, provided that three masters are created, which are successively printed on the same substrate.
If image areas are overprinted in two or more image areas, new colors result because the colors on the Risograph are translucent and mix at the points where they overlap with others. These separations are to be regarded as grayscale images, which can have a respective color application between 0 and 100%. A solid-colored spot of an image thus has 100% of the respective color, whereas lighter areas of the image also have lighter shades. Again, it should be noted that the Risograph does not have the colors of the four-color cyan, magenta, yellow, and black, although the yellow and black in the Risograph palette do come close.